Simple migrations with rake
Migration to create Team table
Rake task gd:update
Rake db:rollback task
Add Stadium and Team models
Remove mlbam_id from Team table

We'll use that as the primary id
Create stadia table
Parse game.xml files to create/update Teams and Stadiums
Add W and L to Teams
Add Player model and players table
Parse batters/ and pitchers/ files
Add Game model and games table
Parse games from linescore.xml
Download GD files and parse them in separate steps
Add AtBats, Pitches, and their db tables
Add status and reason cols to games table
Add db:reset rake task
Parse atbats and pitches from inning_all.xml